A Second Messenger Is

question 65

Multiple Choice

A second messenger is

• A) a substance that brings about a desired effect in a cell as a result of a hormone binding to its receptor on the cell surface
• B) a hormone that acts on a target cell, not one of the releasing factors or trophic hormones that act on specific endocrine glands
• C) a hormone that affects the DNA of the target cell
• D) a specialized form of mRNA

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Definitions:

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Young children from birth to one year of age, known for rapid physical, cognitive, and social development.

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